About Base64 Encoding & Decoding
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It is widely used in email attachments (MIME), data URLs, API payloads, and storing binary data in text-based formats like JSON and XML.
This tool supports both encoding (text to Base64) and decoding (Base64 to text) in a single interface. Toggle between modes instantly, with real-time auto-sync conversion and full UTF-8 support. All processing runs entirely in your browser — your data never leaves your device.